Anti-theft device for a bicycle



FIG. 1 is a left side elevational view of an anti-theft device for a bicycle showing my new design in a partially opened position;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof, the right side being a mirror image of that shown;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a left side elevational view thereof, shown in a fully closed position. 

The new and original design for an anti-theft device for a bicycle, as shown and described. 